/*
 * Copyright (c) 2009, Hamish Morgan. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the University of Sussex nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package locusts.client;

import java.net.InetSocketAddress;
import java.net.SocketAddress;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import locusts.common.net.FullUpdateRequest;
import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.ConnectFuture;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.SimpleByteBufferAllocator;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.serialization.ObjectSerializationCodecFactory;
import org.apache.mina.handler.demux.DemuxingIoHandler;
import org.apache.mina.transport.socket.nio.SocketConnector;
import org.apache.mina.transport.socket.nio.SocketConnectorConfig;

/**
 * Handle and maintain a network connection to the game server.
 * 
 * @author Hamish Morgan
 */
public class ClientNetHandler extends DemuxingIoHandler {

    private final InetSocketAddress address;
    private IoSession session;
    private ClientConfig config;

    public ClientNetHandler(ClientConfig cfg) {
        config = cfg;
        session = null;
        this.address = new InetSocketAddress(cfg.getRemoteHost(), cfg.
                getRemotePort());
        cfg.addChangeListener(new ChangeHandler());
        connect();
    }

    private class ChangeHandler implements ChangeListener {

        public void stateChanged(ChangeEvent e) {
            if (e.getSource() instanceof ClientConfig) {
                ClientConfig cfg = (ClientConfig) e.getSource();
                write(cfg);
            }
        }
    }

    public void write(Object message) {
        if (session == null)
            return;
        session.write(message);
    }

    private void connect() {
        ByteBuffer.setUseDirectBuffers(false);
        ByteBuffer.setAllocator(new SimpleByteBufferAllocator());

        final SocketConnector connector = new SocketConnector();
        final SocketConnectorConfig cfg = new SocketConnectorConfig();
//        cfg.getFilterChain().addLast("compression",
//                new CompressionFilter(CompressionFilter.COMPRESSION_MAX));
//        cfg.getFilterChain().addLast("logger", new LoggingFilter());
        cfg.getFilterChain().addLast("codec", new ProtocolCodecFilter(
                new ObjectSerializationCodecFactory()));
        final ConnectFuture cf = connector.connect(address, this, cfg);
    }

    @Override
    public void sessionOpened(IoSession s) throws Exception {
        super.sessionOpened(s);
        if (s.getLocalAddress() instanceof InetSocketAddress) {
            InetSocketAddress add = (InetSocketAddress) s.
                    getLocalAddress();
            config.setLocalHost(add.getHostName());
            config.setLocalPort(add.getPort());
        }
        session = s;

        s.write(config);
        s.write(new FullUpdateRequest());
//        s.write(player);
    }

    @Override
    public void exceptionCaught(IoSession session, Throwable cause)
            throws Exception {
        cause.printStackTrace();
//        session.close();
    }
}
